[Bug] Nemo Guardrail example doesn't work

Is this a new bug?

[X] I believe this is a new bug
[X] I have searched the existing issues, and I could not find an existing issue for this bug

Current Behavior

While running the guardrail examples present at https://github.com/pinecone-io/examples/tree/master/learn/generation/chatbots/nemo-guardrails/00-intro/config

I get the following error:

Expected Behavior

Bot should have responded with greeting message based on the colang code

define user express greeting "hello" "hi" "what's up?"

Steps To Reproduce

$ nemoguardrails chat --config=config/

Hi

Relevant log output

> hi 
WARNING:nemoguardrails.actions.action_dispatcher:Error while execution generate_user_intent: Error code: 404 - {'error': {'message': 'The model `text-davinci-003` has been deprecated, learn more here: https://platform.openai.com/docs/deprecations', 'type': 'invalid_request_error', 'param': None, 'code': 'model_not_found'}}
I'm sorry, an internal error has occurred.

Environment

No response

Additional Context